Durability of concrete made with manganese slag as supplementary cementitious materials

作者：Rong Jin Liu^*; Qing Jun Ding; Ping Chen; Guang Yao Yang

来源：Journal of Shanghai Jiaotong University (Science), 2012, 17(3): 345-349.

DOI：10.1007/s12204-012-1284-y

• Concrete durability
• Freezing thawing cycles
• Hydraulic reactivity
• Mass fraction
• Microstructure characteristics
• Mineral composition
• Strength loss
• Supplementary cementitious material
• Synthetic seawater
• Weight loss

This paper discusses mineral composition and pore microstructure characteristics of water-cooled manganese slag and its effects on durability of concrete. The Mn slag has an alveolate pore structure, and the ground Mn slag is characterized by multiangular shape which consists of α′-C 2S, C3MS2, CaO&middotMnO&middot2SiO 2and C2AS. Experimental results show that the Mn slag has potential hydraulic reactivity. Concrete made with Mn slag as supplementary cementitious materials (SCMs) exhibits very low strength loss and weight loss in the synthetic seawater corrosion and freezing-thawing cycle tests. The research provides useful reference for knowing about Mn slag and for applying Mn slag to improve the durability of concrete.

• 出版日期2012
• 单位桂林理工大学